Oiling device



Dec. s, 1927. 165mm R. BERNHARD OILING DEVICE Filed March 14, 1927. s Sheets-.Shen 1 il .g 6

31a/vento@ R. BERNHARD OILING DEVICE Filed Maren 14, 1927 :s Sheets-sheetf Deus, 1927. 1,651,864

R. BERNHARD oILING DEVICE Filed March 14, 1927 3 sheets-sheet 3 S14/vento@ 1 0 lubricated with grease.

Patented Dec. 6, 1927.

1 retract PATENT oFFiqcE.

RICHARD IBERNHARDQOF ALLENTOWN, PENNSYLVANIA, ASSIGNOR TIO TRAYLOR EN- GINEERING @n MANUFACTURING COMP CORPORATION or DELAWARE.

ANY, oE ALLENTOWN, PENNSYLVANIA, A

`oILINc DEVICE.

Application mea Mamma-1927. 'seia1N0- 175,371. l

This invention relates to an 'oiling device for slow moving bearings.

An object of this invention is to supply oil to the bearing continuously. The inven- 5 tion isI especially applicable to'shafts, rotating slowly, such as are used on rollers which support cement kilns, revolving dryers, and the like. Thesebearings are subject to tremendous4 pressure and heretofore theywere This proved to be expensive because due to the heat some of it would-melt and run out. Y

Another object is to do away with the necessity for exposing the bearing when replenishing or re-packing the bearing with grease, whichfwould sometimes allow grit to enter the bearing on account of the dust-y condition of the room in which the bearing is located.

.120 The bearings are entirely sealed so no 'grit or any foreign substance can enter them. It is not necessary to replenish the oil but once three to six months depending on the char-V acter of the service. Y

The invention consists in the features, combination, and arrangement of parts hereinafter described and particularly pointedout in the' claims. i

l the 'drawings Figurel'is a longitudinal vertical section throng the apparatus along the axis of the `roller shaft. v 1

. Fig. `2 is a cross section through the bear- `ing on the line 2 2.

Fig. 3 is a plan view of the cooling coil.

Figml-L is a side elevation of the oil wheel,

y'showinga slightly modified form ofbuckets. Y Figa is a section through the oil wheel.

Fig. 5 isfa view of the inner face of the `lOl-end cap for the bearingrmember.

,`,. Figs. 6 .and 7 are views of the bearing bushing showing the oilwells. Figs. 8 and 9 are .views of the `thrust washer. y. Figsl() vand 11 are views of the oil tray.

With referenceto the drawings: A roller C upon which the tire ofthe rotary kiln shell or the like isto rotate has a j shaft 7 with oppositely extending journals 7 l., adapted to bear upon and to Vrotate 'in bear- .150 ings 3 ofbearing members or boxes 3. Each ,bearing member 3 vhas a top cap 4 and an end cap 15.

In thevbottomv of the bearing member an oil reservoir A is provided which is adapted .j .to with lubricant. A" copper cooling notch-es 5b Linthe ends of bearing 3.

coil such as shown at lis placed in the reser. l voir near the surface of the'oil so that upon circulation of cooling liquid through the coil, the hot lubricant will be chilled to retain its lubricating qualities. The coil has inlet andoutlet pipes at l. The reservoir A is disposed lbetween the bottom of the bearingmember 3 and the bearing v3 which bearing is of semicylindrical shape and is lof cated above thebottom of .the bearing vmember and is connected thereto by struts or bars E. j The top cap l of the'v bearing is provided with a pair of peep holes 2'which are placed one on each side of thejournal 7, opposite 70 to each other, and are fitted with glass. It is therefore possible toobserve the lubrication of the journal and to see the circulation of the oil. At night this may readily bev observed by holding a light on roneside, at the v'1'5 peepr hole 2 and looking'into the bearing from the other. The vcondition of the`jour nal may therefore be observed without exposing the .bearing to the possibility of the entrance of grit or dust'. f .The bearing 3y is provided with ka phosphor-bronze liner or bushing 5 which has oil wells 6 formed therein, one on each side of the journal. The 'bushing 5 at its endshas downwardly disposed lugs 5a which lit into The bearing is sealed at the roller hub B of roller Cv by means of'a ring`8 which has a sliding fit in Vthe hub' and which is kept in contact with the end of the bearing by ."r'nezvuis of springs 9,.'whic`h are disposed at intervals about the ring in they groove 9.

The shaft orjournal 7 's provided Vwith an oil wheel l() secured thereto to rotate therewith. v WheellO is of plate or web formation with an annular flange l0 embracing the end of the journal and with buckets l1 formed' in the wheel and 'disposed rat spaced intervals around its periphery. The lowerwith the shaft, the oil is lifted and then-"delivered into the spout12`of oil tray 12a I along which tray it is conveyed and delivered substantially .at the center" of the l journal 7. A tray ksupporting bracket 121.v j :extends upwardly from the trayv into en# gagement with the bearing member 3 where Y it is clamped in position by top cap 4c. The

oilthen runs down `the shaft and intothe.

- flow of oil.

wells 6 of the bronze liner 5.V The wells 6 are always full of lubricant because the supply furnished by the oil wheel is always greater than is necessary to form and Vmaintain the film between the shaft and the bearing. There is, therefore, quite a large over- This overflow together with the lubricant which formed the .film run back into the reservoir-A to be again lifted and recirculated. The reservoir is of su'licient size so that the Yoil has an opportunity to settle whatever' grit may be abraded from the' bearing. j y

The buckets as shown at 11 are constructed to provide for lifting ofthe oil regardless ofthe direction of rotation of the shaft and wheel. That is the bucketsl each have oppositely disposed receptacles.

A rib as shown at 13 is provided in each bucket approximately in line with the4 web of the wheel. This rib serves to divide the dischargey of the oil from each bucket so that the larger'quantity of' the contents of the bucket will be directed down the spout 12 to the'journal, while the smaller quantity will be directed onto the thrust button or washer 14 for the shaft, which is held against lthe shaft by the end cap 15 of the bearing member or boX 3. K

The endeap 15 as shown in Fig. 5 is of disc/@like form, and is provided with bolt holes `15a about itsperiphery for the insertion of bolts to secure the cap to the bearing boX.

The cap 15 onits inner face is provided with a U-shaped flange or rib 15b which is adapted to receive and supportthe thrust washer 14. The thrust Washer or button 14 as shown in Figs. 8 and 9 is of platejor disc-like form. At the topV the washer 14 is provided with a notched` or tapered oil inlet 14a4 which leadsl to vdiametric'al'lyv disposed oil grooves 14b cut into 'the journal engaging Vface of the washer. The 'smaller quantity of the oil ina discharging bucket l11 will be directed, byA means ofa rib 1 3, into the inlet 14'd1 and into the grooves 14b whereby the end of the journal 7y iskept constantly oiled, the used oil returning to the reservoir for settling.

Automatic lubrication is thusV provided for Ythe thrust button contact with the end of the journal as well as for the bearing proper. This device operates with light as well as with heavy oils. lThere are no loose parts, no gears, andthere is nothing to wear out since all moving contact surfaces arey constantly supplied with fresh oil. The elevating device being located at the end 0f the shaft, .does not interferewith the journal bearing in'anyway. On the'larger journal it may be well to use two wheels v10, one on each end of the journal as's'hown in Fig; 1.

Y The base of the bearing member ispro- Yvided witha filling and tell-tale pipe 16 to indicate the "proper level forl the lubricant.

Drains 17 are also provided for vremoving the oil and for washing out the bearing.

The shaft is provided with a drip ring 1b' which is formed integral therewith. This ring prevents the oil from running along the shaft and escaping at the hub of the roller.

l/Va'sh water is prevented from washing grit into the bearing at the hub B of the roller by the dust flange 19 cast integral with the cap and by the drip flange 2O cast integral with the end of the roller hub.

The inventionis not limited to the specific structure described, and various changes may be made within the scope of the inven-A tion. The oil wheel is shown mountedv at the end of the shaft but it may, within the scope of the invention, be placed at the center of the bearing and delivery oil to each side thereof. This would be the construction on very long bearings. buckets in Figs. 4 and 4a is somewhat nitidis lied as compared to the buckets 'shown in Figs. 1 and 2.V l Y I claim:

a bearing member having anV oilk reservoir in its bottom, said reservoir being disposed beneath the semi-cylindrical bearingjof the bearing member, said bearing member having a downwardly disposed dust flange deVV against entry of foreign matter into the" oiled bearing,- land a water cooling 'coil mounted in said bearing member inthe reservoir tocool the oil, said bearing member having an oil inlet and an 'oil outlet-'to Vthe reservoir. n v -V 2.`An oiling device for shaft bearings comprising a bearing member havin'g'a'n oil reservoir in its bottom, said reservoir being l disposed beneath the semi-cylindrical bear-ing of the bearing member, an oil wheel. having lbuckets disposedY about its periphery, 'said wheel being adapted to be secured to theretating shaftvto rota-te'therewith and to be partly submerged in the `oil in said reservoir whereby oil is continuously lifted vaboveV the bearing and rotating shaft,a 'thrust washer held against .the end of the rotating sha-ft by the end cap of the -bearinr member, and m'eansto distribute the oil to ythe bearing and thrust washer.

" 3. A device according to claim 2 in 'which the buckets of said oil wheel `have opposite -ly disposed receptacles whereby oil will be conveyed regardless vof the directionof rotation of the shaft, said'oil'wheel havingV The shapey of the 1. In an oiling device for shaft bearings,

ins

bucket receptacles into a larger anda smaller compartment, whereby upon a lled bucket Vreaching its upper limit of travel the oil in the larger compartment will be delivered to the main bea-ring and the oil inthe smaller compartment willbe delivered to the thrust washer and to the endy of the rotating shaft.

4. Apparatus according to claim 2 in which said thrust washer comprises a plate having a curved lower end and a square upper end, said upper end being notchedto provide a downwardly tapering'oil inlet, said plate having crossed diametrically disposed oil grooves on its inner surface, one of which is in communication with said inlet, whereby oil is distributed through the washer into contact'with the end of the rotating shafts, saidinlet being adapted 'toreceive the oil discharged from said buckets.

5. In apparatus according to claim 2, an

oil distributing spout disposed beneath the discharging buckets of the oil wheel and inclining downwardly and away 'from said buckets to a point midway of the length of the rotating shaft, said spout having an up-v wardly extending bracket adapted'to be secured to said bearing member to support the spout. v l In testimony whereof, I aiiix my signature.

A 'RICHARD BERNHARD. n 

